

'''simple docstring'''

from math import log

from scipy.constants import Boltzmann, physical_constants

A_							    =				3_00  # TEMPERATURE (unit = K)





def  A_	(			snake_case   ,							snake_case   ,							snake_case   ,							):

  if donor_conc <= 0:
    raise ValueError("Donor concentration should be positive"			)
  elif acceptor_conc <= 0:
    raise ValueError("Acceptor concentration should be positive"			)
  elif intrinsic_conc <= 0:
    raise ValueError("Intrinsic concentration should be positive"			)
  elif donor_conc <= intrinsic_conc:
    raise ValueError(
        "Donor concentration should be greater than intrinsic concentration"			)
  elif acceptor_conc <= intrinsic_conc:
    raise ValueError(
        "Acceptor concentration should be greater than intrinsic concentration"			)
  else:
    return (
        Boltzmann
        * T
        * log((donor_conc * acceptor_conc) / intrinsic_conc**2			)
        / physical_constants["electron volt"][0]
    )


if __name__ == "__main__":
    import doctest

    doctest.testmod()








def 							A__       (    lowerCamelCase = 4_00_00_00    )	->						int:
				UpperCamelCase_:				Dict						=    []
				UpperCamelCase_, UpperCamelCase_:				Optional[int]						=    0, 1
				while b <= n:
								if b % 2 == 0:
												even_fibs.append(lowerCamelCase    )
								UpperCamelCase_, UpperCamelCase_:				int						=    b, a + b
				return sum(lowerCamelCase    )


if __name__ == "__main__":
							print(F"""{solution() = }""")






